Neuroradiology: Key Differential Diagnoses and Clinical Questions

Sacral Masses

CASE A A 71-year-old man with severe pain in his buttocks and lower back. Ax, axial; CT, computed tomography; Sag, sagittal. Open full size image CASE B A 20-year-old woman with progressive pain in her lower back and buttocks. Ax,…

Posterior Element Lesions

CASE A A 54-year-old woman presenting with back pain and left L3 radiculopathy. CT, computed tomography; STIR, short T1 inversion recovery. Open full size image CASE B A 19-year-old man presenting with right lower back pain. CT, computed tomography; FS…